A data-processing circuit includes a distributor. Raw image data of horizontal 3840 pixels×vertical 2160 pixels that is periodically outputted from a CMOS-type imaging device is divided by the distributor into four blocks of partial image data. The divided four blocks of partial image data are subjected to a pre-process in parallel by first to fourth pre-processing blocks. On the other hand, raw image data of horizontal 1280 pixels×vertical 960 pixels that is periodically outputted from a CCD-type imaging device is serially subjected to a pre-process by a fifth pre-processing block. The number of pixels of the raw image data outputted from the CCD-type imaging device is equal to or less than ¼ the number of pixels of the raw image data outputted from the CMOS-type imaging device. A numerical value “4” is equivalent to the number of parallel pre-processes on the raw image data outputted from the CMOS imaging device.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A video camera, comprising: an imager, having an imaging surface irradiated with an optical image of an object scene, which outputs first image data having pixels equivalent to a first number; a first processor which executes a first process on the first image data outputted from said imager; a creator which creates second image data having pixels equivalent to a second number different from said first number based on the first image data processed by said first processor; and a second processor which executes a second process on the second image data created by said creator in synchronous with a frequency having a numerical value based on the difference between the first number and the second number.
2. A video camera according to claim 1 , wherein said first processor executes said first process in synchronous with a frequency having a numerical value based on a reference frequency, and the frequency for said second process has a numerical value obtained by multiplying a ratio of said second number to said first number by a numerical value that said reference frequency indicates.
3. A video camera according to claim 2 , wherein said first processor includes: a divider which divides said first image data into N blocks (N: an integer equal to or more than two) of partial image data; and a parallel processor which executes in parallel said first process on the N blocks of partial image data divided by said divider, and the frequency for said first process has a numerical value that is 1/N the numerical value that said reference frequency indicates.
4. A video camera according to claim 3 , wherein said second processor serially executes said second process on said second image data, and said second number is 1/N said first number.
5. A video camera according to claim 1 , wherein said creator includes: an allocator which allocates an extraction area covering pixels equivalent to said second number, on said imaging surface; and an extractor which extract, as said second image data, one portion of image data belonging to the extraction area allocated by said allocator.
6. A video camera according to claim 5 , further comprising a mover which moves said extraction area in a direction to offset a movement of said imaging surface in a direction orthogonal to an optical axis, wherein said imager repeatedly outputs said first image data.
7. A video camera according to claim 1 , wherein said first image data is data including both an optical black component and an object-scene-image component, and said second image data is data including only said object-scene-image component out of said optical black component and said object-scene-image component.
8. A video camera, comprising: an imager, having an imaging surface irradiated with an optical image representing a scene, which outputs first image data having pixels equivalent to a first number; a divider which divides the first image data outputted from said imager into N blocks (N: an integer equal to or more than two) of partial image data; a first processor which executes in parallel a first process on the N blocks of partial image data divided by said divider; a creator which creates second image data having pixels equivalent to a second number that is equal to or less than 1/N said first number based on the N blocks of partial image data processed by said first processor; and a second processor which serially executes a second process on the second image data created by said creator.
9. A video camera according to claim 8 , wherein said first processor and said second processor respectively execute said first process and said second process in synchronous with a common frequency.
10. A video camera according to claim 8 , wherein said first processor executes said first process in synchronous with a first frequency equivalent to 1/N a reference frequency, and said second processor executes said second process in synchronous with a second frequency that is equal to or more than said first frequency.
11. A video camera according to claim 8 , wherein said creator includes: an allocator which allocates an extraction area covering pixels equivalent to said second number, on said imaging surface; and an extractor which extracts, as said second image data, one portion of image data belonging to the extraction area allocated by said allocator.
12. A video camera according to claim 11 , further comprising a mover which moves said extraction area in a direction to offset a movement of said imaging surface in a direction orthogonal to an optical axis, wherein said imager repeatedly outputs said first image data.
13. A video camera according to claim 8 , wherein said first image data is data including both an optical black component and a scene image component, and said second image data is data including only said scene image component out of said optical black component and said scene image component.
14. A video camera, comprising: an imager, having an imaging surface irradiated with an optical image representing a scene, which outputs first image data having pixels equivalent to a first number; a first processor which executes a first process in synchronous with a first frequency on the first image data outputted from said imager; a creator which creates second image data having pixels equivalent to a second number different from the first number based on the first image data processed by said first processor; and a second processor which executes a second process in synchronous with a second frequency indicating a numerical value based on a difference between the first number and the second number, on the second image data created by said creator, wherein said first processor includes: a divider which divides the first image data into N blocks (N: an integer equal to or more than two) of partial image data; and a parallel processor which executes in parallel the first process on the N blocks of the partial image data divided by said divider.
15. A video camera according to claim 14 , wherein the first frequency indicates a numerical value that is 1/N the numerical value indicated by a reference frequency, and the second frequency indicates a numerical value obtained by multiplying a ratio of the second number to the first number by a numerical value indicated by the reference frequency.
16. A video camera according to claim 14 , wherein said second processor serially executes the second process on the second image data, and the second number is 1/N the first number.
17. A video camera according to claim 14 , wherein said creator includes: an allocator which allocates an extraction area covering pixels equivalent to the second number, on said imaging surface; and an extractor which extracts, as the second image data, one portion of image data belonging to the extraction area allocated by said allocator.
18. A video camera according to claim 17 , further comprising a mover which moves the extraction area in a direction to offset a movement of said imaging surface in a direction orthogonal to an optical axis, wherein said imager repeatedly outputs the first image data.
19. A video camera according to claim 14 , wherein the first image data is data including both an optical black component and a scene image component, and the second image data is data including only the scene image component out of the optical black component and the scene image component.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
September 12, 2008
April 3, 2012
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